C#中如何实现如下图片显示功能

csandcs 2017-02-10 05:50:14

如图所示，要求在windows窗体上显示上图，并且加斜线的那个图的长度和宽度可以随着参数的变化而变化，这个功能如何实现？

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csandcs 2017-02-15

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引用 13 楼 mjp1234airen4385 的回复:

要么多边形绘图，要么绘两个图，叠加到以前就行。

已经采用多边形绘图实现了，谢谢。

crystal_lz 2017-02-13

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Grahpics.DrawXXXX 有很多绘图函数根据自己的情况选择。。。

mjp1234airen4385 2017-02-13

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要么多边形绘图，要么绘两个图，叠加到以前就行。

以专业开发人员为伍 2017-02-11

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如果你的问题是不会用某个画线语句来画线，或者不知道几何知识表示，那么开另外一个帖子。从简单的1+2=3问题开始学习。

以专业开发人员为伍 2017-02-11

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引用 8 楼 csandcs 的回复:

我给的这个图形是在左下角缺个小三角形，还有个图是在右下角多个小三角形，请问这个怎么实现？

贴出你的代码。

csandcs 2017-02-11

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引用 9 楼 qq_36769535 的回复:

是这种效果么？


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace dm_2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Draw(Rectangle rectangle, Graphics g, int _radius, bool cusp, Color begin_color, Color end_color)
        {
            int span = 2;
            g.SmoothingMode = SmoothingMode.AntiAlias;
            LinearGradientBrush myLinearGradientBrush = new LinearGradientBrush(rectangle, begin_color, end_color, LinearGradientMode.Vertical);
            if (cusp)
            {
                span = 10;
                PointF p1 = new PointF(rectangle.Width - 12, rectangle.Y + 10);
                PointF p2 = new PointF(rectangle.Width - 12, rectangle.Y + 30);
                PointF p3 = new PointF(rectangle.Width, rectangle.Y + 20);
                PointF[] ptsArray = { p1, p2, p3 };
                g.FillPolygon(myLinearGradientBrush, ptsArray);
            }
            g.FillPath(myLinearGradientBrush, DrawRoundRect(rectangle.X, rectangle.Y, rectangle.Width - span, rectangle.Height - 1, _radius));
        }
        public static GraphicsPath DrawRoundRect(int x, int y, int width, int height, int radius)
        {
            GraphicsPath gp = new GraphicsPath();
            gp.AddArc(x, y, radius, radius, 180, 90);
            gp.AddArc(width - radius, y, radius, radius, 270, 90);
            gp.AddArc(width - radius, height - radius, radius, radius, 0, 90);
            gp.AddArc(x, height - radius, radius, radius, 90, 90);
            gp.CloseAllFigures();
            return gp;
        }

        private void panel1_Paint(object sender, PaintEventArgs e)
        {
            Draw(e.ClipRectangle, e.Graphics, 18, true, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0));
            base.OnPaint(e);
            Graphics g = e.Graphics;
            g.DrawString("我是个Panel", new Font("微软雅黑", 20, FontStyle.Regular), new SolidBrush(Color.White), new PointF(10, 10));
        }

        private void panel2_Paint(object sender, PaintEventArgs e)
        {
            Draw(e.ClipRectangle, e.Graphics, 18, true, Color.FromArgb(0, 122, 204), Color.FromArgb(8, 39, 57));
            base.OnPaint(e);
            Graphics g = e.Graphics;
            g.DrawString("我是个大大的Panel", new Font("微软雅黑", 20, FontStyle.Regular), new SolidBrush(Color.White), new PointF(10, 10));
        }
    }
}

非常感谢，虽然跟我想要的模型形状还差一些，但是提供了很好的思路，我模仿一下看看能不能做出来。再一次谢谢。

qq_36769535 2017-02-10

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是这种效果么？



using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Linq;

using System.Text;

using System.Windows.Forms;



namespace dm_2

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void Draw(Rectangle rectangle, Graphics g, int _radius, bool cusp, Color begin_color, Color end_color)

        {

            int span = 2;

            g.SmoothingMode = SmoothingMode.AntiAlias;

            LinearGradientBrush myLinearGradientBrush = new LinearGradientBrush(rectangle, begin_color, end_color, LinearGradientMode.Vertical);

            if (cusp)

            {

                span = 10;

                PointF p1 = new PointF(rectangle.Width - 12, rectangle.Y + 10);

                PointF p2 = new PointF(rectangle.Width - 12, rectangle.Y + 30);

                PointF p3 = new PointF(rectangle.Width, rectangle.Y + 20);

                PointF[] ptsArray = { p1, p2, p3 };

                g.FillPolygon(myLinearGradientBrush, ptsArray);

            }

            g.FillPath(myLinearGradientBrush, DrawRoundRect(rectangle.X, rectangle.Y, rectangle.Width - span, rectangle.Height - 1, _radius));

        }

        public static GraphicsPath DrawRoundRect(int x, int y, int width, int height, int radius)

        {

            GraphicsPath gp = new GraphicsPath();

            gp.AddArc(x, y, radius, radius, 180, 90);

            gp.AddArc(width - radius, y, radius, radius, 270, 90);

            gp.AddArc(width - radius, height - radius, radius, radius, 0, 90);

            gp.AddArc(x, height - radius, radius, radius, 90, 90);

            gp.CloseAllFigures();

            return gp;

        }



        private void panel1_Paint(object sender, PaintEventArgs e)

        {

            Draw(e.ClipRectangle, e.Graphics, 18, true, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0));

            base.OnPaint(e);

            Graphics g = e.Graphics;

            g.DrawString("我是个Panel", new Font("微软雅黑", 20, FontStyle.Regular), new SolidBrush(Color.White), new PointF(10, 10));

        }



        private void panel2_Paint(object sender, PaintEventArgs e)

        {

            Draw(e.ClipRectangle, e.Graphics, 18, true, Color.FromArgb(0, 122, 204), Color.FromArgb(8, 39, 57));

            base.OnPaint(e);

            Graphics g = e.Graphics;

            g.DrawString("我是个大大的Panel", new Font("微软雅黑", 20, FontStyle.Regular), new SolidBrush(Color.White), new PointF(10, 10));

        }

    }

}